rockchip: rk3188: Add sysreset driver
Driver for the sysreset of Rockchip rk3188 socs.
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Reviewed-by: Simon Glass <sjg@chromium.org>
Tested-by: Kever Yang <kever.yang@rock-chips.com>
diff --git a/drivers/sysreset/sysreset_rk3188.c b/drivers/sysreset/sysreset_rk3188.c
new file mode 100644
index 0000000..36ae476
--- /dev/null
+++ b/drivers/sysreset/sysreset_rk3188.c
@@ -0,0 +1,47 @@
+/*
+ * (C) Copyright 2015 Google, Inc
+ *
+ * SPDX-License-Identifier: GPL-2.0
+ */
+
+#include <common.h>
+#include <dm.h>
+#include <errno.h>
+#include <sysreset.h>
+#include <asm/io.h>
+#include <asm/arch/clock.h>
+#include <asm/arch/cru_rk3188.h>
+#include <asm/arch/hardware.h>
+#include <linux/err.h>
+
+int rk3188_sysreset_request(struct udevice *dev, enum sysreset_t type)
+{
+ struct rk3188_cru *cru = rockchip_get_cru();
+
+ if (IS_ERR(cru))
+ return PTR_ERR(cru);
+ switch (type) {
+ case SYSRESET_WARM:
+ rk_clrreg(&cru->cru_mode_con, 0xffff);
+ writel(0xeca8, &cru->cru_glb_srst_snd_value);
+ break;
+ case SYSRESET_COLD:
+ rk_clrreg(&cru->cru_mode_con, 0xffff);
+ writel(0xfdb9, &cru->cru_glb_srst_fst_value);
+ break;
+ default:
+ return -EPROTONOSUPPORT;
+ }
+
+ return -EINPROGRESS;
+}
+
+static struct sysreset_ops rk3188_sysreset = {
+ .request = rk3188_sysreset_request,
+};
+
+U_BOOT_DRIVER(sysreset_rk3188) = {
+ .name = "rk3188_sysreset",
+ .id = UCLASS_SYSRESET,
+ .ops = &rk3188_sysreset,
+};